Centralizers are an integral part of the cementing process&period; They provide the mechanism that centers the casing in the hole and allows uniform cement flow around the casing to help protect it at all points&period; Several styles of centralizers are available for matching different well specifications and hole sizes&comma; including turbulence generating designs that help clean the annulus and distribute the cement more evenly and uniformly&period;

All models offer ample clearance for fluid passage and are extra effective in centering the casing&comma; even in highly deviated holes and improve cement flow by reducing the effects of channeling&period;

Spiral Solid Rigid Centralizer

There are five or six spiral belt&lpar;straight belt&rpar;&period; Streamlined grooves are between spiral belt &lpar;straight belt&rpar;&period; In each belt&comma; two or three alloy steel rollers with heat treatment are equipped&period; This type will be recomended as using in deviated well and horizontal well cementing&period;

Easy to install&period;Less flow restriction than other centralizers&period;Unaffected by lateral load&period;Casing moves freely within the centralizer&period;Reduces differential sticking and casing contact&period;

Rigid centralizers can be installed on the casing with stop collars or with integral set screws&period; Installations that allow casing rotation and reciprocation are preferred because of improved displacement efficiency&period;

Most slip-on rigid centralizers must be installed between stop collars and are free floating there between&period; The new series centralizer is designed with an integral stop collar between the end rings&period;

This helps eliminate the risk of collapsing the centralizer assembly as it is forced through tight spots or high-drag sections of the wellbore&period;